MKVToolNix

MKVToolNix is a collection of tools for the Matroska media container format by Moritz Bunkus including mkvmerge. The free and open source Matroska libraries and tools are available for various platforms including Linux and BSD distributions, macOS and Microsoft Windows. The tools can be also downloaded from video software distributors^[4] and FOSS repositories.^[5]

mkvmerge GUI v5.7.0, a component of MKVToolNix, showing its "Global" tab
Original author(s)	Moritz Bunkus
Developer(s)	Moritz Bunkus
Initial release	April 30, 2003; 22 years ago (2003-04-30)
Stable release	92.0[1] / April 26, 2025; 28 days ago (2025-04-26)
Repository	codeberg.org/mbunkus/mkvtoolnix
Written in	C++ (GUI: originally in wxWidgets, but ported to Qt5 due to the wxWidgets problems.[2] [3]
Operating system	Unix-like, macOS, Microsoft Windows, Linux
Platform	Matroska
Size	~20 MB
Available in	27 languages: list
Type	Multimedia software (container format manipulation)
License	GPLv2 or later
Website	mkvtoolnix.download

Applications

MKVToolNix was reviewed by the Linux Journal, Linux Format, the ICTE Journal, and Softpedia among others.^[6] The tools are cited in patents for a "Universal container for audio data".^[7] A "portable" Windows edition exists, but is not yet^[update] available in the PortableApps format.^[8]

Components

MKVToolNix GUI

is a Qt GUI for mkvmerge and a successor of mmg.

mkvmerge

merges multimedia streams into a Matroska file.^[9]

mkvinfo

lists all elements contained in a Matroska file.

mkvextract

extracts specific parts from a Matroska file to other formats.

mkvpropedit

allows to analyze and modify some Matroska file properties.

See also

• Free and open-source software portal

• Converting video on Wikimedia Commons
• List of open-source codecs